Fig. (2) Comparison of CHS gene expression in each stage of flower development by Semi-quantitative RT-PCR and 18S rRNA gene is control. Lotus cv. Buntharik (B) and cv. Sattabangkacha (S), flower stage 1 diameter of flower lower 3 cm (B1, S1), stage 2 diameter of flower 3-5 cm (B2, S2), stage 3 diameter of flower 5-7 cm (B3, S3), stage 4 diameter of flower 7-10 cm (B4, S4) and stage 5 open flower (B5, S5).